Proton Magnetic Resonance of Biological Systems

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Nuclear magnetic resonance (NMR), with its combined sensitivity to both structure and dynamics, is a well-proven technique for the study of biological systems. Since life processes occur in solution, the proton NMR of water in these systems should contain important information. Indeed, medical magnetic resonance imaging (MRI) relies on the exquisite contrast provided by differences in signal from tissue water between different types of normal tissue and between normal and pathological tissue. However, our understanding of the fundamental origins of this exquisite MR contrast is still at a primitive stage.